--- version: rssac002v3 service: a.root-servers.net start-period: '2018-01-02T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4850073439 dns-udp-queries-received-ipv6: 390210654 dns-tcp-queries-received-ipv4: 140408258 dns-tcp-queries-received-ipv6: 14124829 dns-udp-responses-sent-ipv4: 4847526902 dns-udp-responses-sent-ipv6: 390176452 dns-tcp-responses-sent-ipv4: 142561642 dns-tcp-responses-sent-ipv6: 14260289